Timer



Feb. 20, 1923.

L. J. BAH? TIMER Filed Jan.

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ATTORNEYS WITNESSES Patented Feb. 20, 1923.

UNITED STATES LEIGH J'. BAIR, OF NEW YORK, N. Y.

TIMER.

Application filed January 15, 1921. Serial No. 437,513.

To all whom it may concern Be it known that I. Lnrcrr J. Run, a citizen of the United States, and a resident of the city of New York, borough of Man hattan, county and State of New fork, have invented a new and Improved Timer. of which the following is a full, clear, and exact description.

This invention relates to timers for internal combustion engines and particularly to an improved timer for a Ford engine and has for an object to provide a construction. which is simple, strong and which will have positive operation continuously.

Another object of the invention is to provide a timer for Ford automobile." in which a sliding contact is arranged between the contact post and the rotor whereby an even wear is produced on all of the parts and whereby there will be no jumping of the contact brush and adjacent the contact tion of the rotor.

A further object more specifically is to provide a timer formed of insulating ma terial with a Contact breaker of insulating material and formed as a disc with a single metallic section so that a rubbing engagement may be continually provided.

In the accompanying drawings Figure 1 is a front elevation of a timer disclosing an embodiment of the invention.

Figure 2 is a sectional view through Figure 1 approximately on line Figure 3 is a fragmentary sectional view through Figure 1 approximately on line 33.

Figure 4 is a front elevation of the contact breaker shown in Figure 2.

Figure 5 is a view similar to Figure 4 but disclosing a modified form of contact breaker.

Figure 6 is an edge view of the structure shown in Figure 5.

The timer disclosed in the accompanying drawings is made a proper shape to fit into the place provided for an ordinary timer now in common use on Ford automobiles so that in order to use the timer embodying the invention on a Ford automobile it will be merely necessary to remove the old timer and substitute the new one. As is known,

the ordinary timer now in common use on Ford automobiles consists of stationary contacts with a breaker having a rotor adapted to roll over these contacts at the proper time. This action produces undesirable results by reason of the fact that there are ditferent materials involved and, consequently. an uneven. wear on the surface results, said uneven wear producing raised portions at the points of contact which by reason of the high speed of the parts causes the brushes lo jump and oftentimes fail to engage the rcspective contacts. Also, difliculties are caused by the accumulation of oil on the various contacts so that often the desired spark cannot be secured. v

In the present invention it is aimed to overcome these difficulties by providing a construction in which a sliding or rubl'iing contact is rovided which in a certain sensiacts as an automatic cleaner as well as a make and break mechanism. Also the action of the rotor throws off any oil deposited thereon and, consequently, leaves the contacts free to provide a good connection and, consequently, to permit a good spark at the proper time. The timer requires no oil or other attention for its operation.

Referring to the accompanying drawings by numeral, 1 indicates a casing constructed of insulating material which is held in place by a suitable spring 2 of the usual. construction and arrangement, said spring co-acting with the flange 3 so as to hold the casing 1 in proper place and allow the spark advance rod operatic in the aperture 4. to properly shift the casing and the contacts carried thereby whenever desired. Coacting with the casing 1 is a rotor 5 provided with a tubular shank 6 having an aperture 7 arranged therein whereby the retaining pin 8 may extend through the shank 6 and. also through the aperture 7 as well as the slot in the timer shaft 9. By reason of this connection the rotor 5 is operated at the proper speed and is held against the respective contact blocks 10. The rotor 5 is made from a disc 11 of metal having a thickened section 12 which acts as the breaker contact while the remaining contact of the disc 11 is covered with an insulating material 1.3 which may be rubber, bakelite or other material which will stand more or less wear caused by the blocks 10. It will be noted that the blocks 10 continually press against the rotor 5 and as each block 10 engages the metal section 12 it Wlll complete the circuit.

The casing 1 is provided with as many blocks 10 as there are cylinders in the engine which is disclosed as 4. Each of these will blocks may he of any suitable conducting material, as for instance, carbon and is provided With a reduced section it having a groove therein for receiving one end of the spring 15. The opposite end of the spring is clamped against the casing l by the head 16 of a screw 1?. .ln this Way, each of the blocks 10 are resiliently heldin their guiding socket 18. The screw 17 is clamped. in place by a. suitable nut 19 while a contact nut 20 clamps the Wire 2i to the screw for completing the circuit at this point. Lhe spring 2 acts, to hold the casing and other parts in Woper position while the various springs 1:) act to take up the Wear of the blocks 10 and also. the rotor 5 and ther hy maintain, the parts in proper position tor curing, a. good contact all. time. it Will noted that the bloc if; .0 slide or rub against the insulation 13 mostof the time and, concequently, this insulation must he of sul fi ciently hard ruhliier or er material to Withstand this ruhliiinu ac n for an appreciable time. It will, course be unilerstood that the insilatic'm 1.7% may be of an thickness desired lnll igures and l a slight modified form of rotor shown in which the insulating material 13' is the full thiclniiess of the rotor except at the control segment 12. The control. segment 12; merges into a shank 6 which shank is provided with a plurality of anchors 22 haidnu overhanging shoulders 23 whereby the material 12' may readily interlock therewith. In order to cause the insulating material 13 to properly interlock With the control segment 12 said thickened section may be provided with grooved edges 2 as shown in Figure 6.

What I claim is e 1. 3i timer of the character described comprising a molded casing of insulating material formed with a plurality o1 integral equally spaced sockets arranged interiorly thereof and extending parallel "ith the axis of the casing, a contact block arranged in. each of said sockets means :For connecting a conducting wire with each oi: said contact blocks and a disk-shaped contact breaker positioned in the casing so one side there of Will engage all of said blocks, said dist: having a face oi insulating material except one point.

2. i l timer of the character dos ibcd comprising a casing construrtei l of insulating material and provided with a disk shaped hotly hating an annular flange e21 tending i om one face and a spring" receii in hollow projection 'l'roin the other face. said body being also provided with integral socket members extending iron the same face as the annular flange said sockets beinn; grouped in a circle centrally "within said flange a plurality oi. sprine pressed. contacts arranged in said sockets. and a contact breaker continually ongaginusaid contacts, said breaker being formed with a narrow conducting section and an insulating section, said sections being all in the same plane, and means for connecting to conduct in o; Wire to each oil? said spring pressed contacts.

LEIGH J. "ill, 

